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Ruffe, Gymnocephalus cernuus: Newly introduced in North America

January 1, 1992

The Eurasian ruffe, Gymnocephalus cernuus, was collected from the lower St. Louis River, Lake Superior's westernmost tributary, in late summer 1987. This is the first known occurrence of the ruffe in North America. The likely vector for this species was ballast water of a transoceanic vessel dumped into the international port of Duluth-Superior located on the lower end of the St. Louis River. The ruffe is increasing in abundance and expanding its range into other tributaries and nearshore areas of Lake Superior.

Publication Year 1992
Title Ruffe, Gymnocephalus cernuus: Newly introduced in North America
DOI 10.1139/f92-179
Authors Dennis M. Pratt, William H. Blust, James H. Selgeby
Publication Type Article
Publication Subtype Journal Article
Series Title Canadian Journal of Fisheries and Aquatic Sciences
Index ID 1000776
Record Source USGS Publications Warehouse
USGS Organization Great Lakes Science Center